Comparison of Adenoma Detection Rate in 3D vs. 2D Surveillance Colonoscopy

Recruiting now · Not applicable

Conditions studied: Colonoscopy, Adenoma Detection Rate, Three Dimensional, Colon Polyps and Adenomas

In brief

There is substantial evidence confirming that identifying and removing colorectal adenomas during colonoscopy helps prevent the development of colorectal cancer. Among the quality indicators for colonoscopy, adenoma detection rate (ADR) is the most important, as it is closely related to the patient's future risk of colorectal cancer. Recent studies have further demonstrated that improving ADR can reduce future mortality from colorectal cancer. Notably, non-polypoid lesions (such as flat or depressed lesions) are more likely to be missed during traditional colonoscopy, making these lesions a leading cause of post-colonoscopy interval colorectal cancer. In a prospective trial conducted by our team comparing the ADR of 3D colonoscopy with standard 2D colonoscopy, we found that 3D colonoscopy significantly improved overall ADR and the detection rate of non-polypoid adenomas. According to current international guidelines, after an index colonoscopy, patients are recommended to undergo surveillance colonoscopy 1 to 10 years later, depending on their findings at index colonoscopy. Since these patients represent the majority in clinical practice, increasing the ADR during surveillance colonoscopy not only allows for more precise recommendations for the timing of the next colonoscopy but also effectively reduces the risk of post-colonoscopy colorectal cancer (PCCRC). Therefore, this multicenter, prospective, randomized trial aims to compare the clinical performance of 3D colonoscopy and standard 2D colonoscopy in the context of surveillance colonoscopy.

Key facts

Study ID

NCT07076966

Run by

National Taiwan University Hospital

People needed

500

Starts

2024-01-01

Expected to finish

2027-02-28

Last updated by the study team

2025-07-24

Who can join

Age: 40 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Subjects who are 40 years of older
• Subjects who receive colonoscopy and polypectomy more the 1 year
• Subjects who need surveillance colonoscopy

You may not qualify if…

• Contraindication for colonoscopy
• Subjects with familiar or hereditary polyposis
• Subjects with history of colectomy
• Inadequate bowel cleansing level
• Subjects with inflammatory bowel disease

Where it is running

• National Taiwan University Hospital, Hsinchu Branch — Hsinchu, Taiwan, Taiwan (enrolling)
• National Taiwan University Cancer Center — Taipei, Taiwan, Taiwan (enrolling)
• National Taiwan University Hospital — Taipei, Taiwan, Taiwan (enrolling)

Full record on ClinicalTrials.gov

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